Abstract

The invention relates to a line element (100) having an inner element (IE), an outer element (AE) surrounding the inner element, and a sliding layer (131, 132) in the form of an anti-friction lacquer, which is arranged in the contact region on the inner element (IE) and/or on the outer element (AE).

IPC Classes  ?

• F16L 11/16 - Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
• F16L 27/10 - Adjustable jointsJoints allowing movement comprising a flexible connection only
• F16L 27/11 - Adjustable jointsJoints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
• F16L 51/02 - Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly

Abstract

The invention relates to a line element (100) with an inner element (IE), an outer element (AE) surrounding the inner element, and a damping element (DE) arranged between the inner element (IE) and outer element (AE), for example of wire knitted fabric or a stripwound hose. The damping element (DE) can be composed in particular of a more easily wearing material than the outer element (AE) and/or the inner element (IE), for example of copper.

IPC Classes  ?

• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• F16L 27/10 - Adjustable jointsJoints allowing movement comprising a flexible connection only
• F16L 39/04 - Joints or fittings for double-walled or multi-channel pipes or pipe assemblies allowing adjustment or movement
• F16L 27/111 - Adjustable jointsJoints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations the bellows being reinforced
• F16L 51/02 - Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
• F16L 55/033 - Noise absorbers
• F16L 11/20 - Double-walled hoses
• F16L 55/04 - Devices damping pulsations or vibrations in fluids
• F16L 27/107 - Adjustable jointsJoints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve
• F16L 11/16 - Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
• F16L 11/15 - Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated

Abstract

The invention relates to a line element (100) for exhaust gas pipes, which has a coaxial structure made of an inner hose (IS), a central hose (MS) and an outer hose (AS). The inner hose (IS) and the outer hose (AS) are typically formed by wound hoses made of metal, and the central hose (MS) is formed by a gas-tight membrane bellows or a corrugated bellows. Preferably, there is a distance (dAM) between the central hose (MS) and the outer hose (AS), so that said hoses are not in contact.

IPC Classes  ?

• F16L 27/10 - Adjustable jointsJoints allowing movement comprising a flexible connection only
• F16L 51/02 - Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits

Abstract

The invention relates to line elements (600) consisting of a multi-layer inner element (IE) and an outer element (AE), wherein the inner element (IE) and the outer element (AE) are in contact with each other at points, at lines, over part of the surfaces thereof, or over the full surfaces thereof. Furthermore, a frictional contact protection means extending over the component length is provided, or a frictional layer (121) is provided in the contact region of the inner element (IE) and the outer element (AE). The wear of the outer element (AE) caused by friction can thereby be minimized.

IPC Classes  ?

• F16L 11/15 - Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• F16L 11/16 - Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
• F16L 11/20 - Double-walled hoses
• F16L 27/10 - Adjustable jointsJoints allowing movement comprising a flexible connection only
• F16L 27/11 - Adjustable jointsJoints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
• F16L 51/02 - Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
• F16L 55/04 - Devices damping pulsations or vibrations in fluids
• B21C 37/12 - Making tubes or metal hoses with helically arranged seams

Abstract

The invention relates to an apparatus and a method for producing coiled tube products, containing a coiling machine (3100) for coiling a strip to a coiled tube (WS) and a finishing machine (3200) for cutting off pieces of desired length from the coiled tube (WS) and for connecting strip layers in the end sections of the coiled tube product by way of an assembly operation, the finishing machine having a mobile operating head and/or a force decoupling unit (3300).

IPC Classes  ?

• B23K 26/38 - Removing material by boring or cutting
• F16L 11/16 - Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
• B21C 37/12 - Making tubes or metal hoses with helically arranged seams

Abstract

The invention relates to a coiled hose (1200) made of at least one helically wound strip (1210, 1220), wherein strip windings are bonded at least in some regions by an additional material (1250) that is different from the strip material. The additional material can contain in particular zinc and be applied by hot galvanizing.

IPC Classes  ?

• F16L 11/16 - Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly

Abstract

The invention relates to an extendible coiled tube (200) made of at least two spiral-shaped coiled strips (210, 220), said tube having at least three telescoping sections (TA1, TA2, TA3) in a longitudinal section. Said telescoping sections overlap axially in the compressed state of the coiled tube, lie next to each other axially in the extended state of the coiled tube, and interlock with respect to an axial pull out. The coiled tube can achieve an extension of over 100%. The axial length of the coiled tube in the compressed state is determined substantially by one of the two strips, and the axial length of the coiled tube in the extended state is determined by all the strips contained in the geometry of the tube. To achieve this, the different profiles move into each other telescopically during compression and extension. The coiled tube can be used in exhaust systems in order to insulate pipelines with small bending radii, for example.

IPC Classes  ?

• F16L 11/16 - Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly